Feature: As an end-user, I should be able to see the list of agents in the widget. (#461)

Co-authored-by: Pranav Raj S <pranavrajs@gmail.com>

app/javascript/widget/api/endPoints.js

@@ -18,8 +18,16 @@ const updateContact = id => ({
   url: `/api/v1/widget/messages/${id}${window.location.search}`,
 });
 
+const getAvailableAgents = token => ({
+  url: '/api/v1/widget/inbox_members',
+  params: {
+    website_token: token,
+  },
+});
+
 export default {
   sendMessage,
   getConversation,
   updateContact,
+  getAvailableAgents,
 };